Signal Routing and System Configuration
R&S
®
SMW200A
188User Manual 1175.6632.02 ─ 16
Parameter Value
"I/Q Output Type"
Depends on "System Configuration > External RF and I/Q > Preset behavior:
Keep connections to external instruments":
●
"Off": Single Ended
●
"On": Not affected by the "Set to Default"
"I/Q Level Vp (EMF)" 1 V
"Bias (EMF)" 0 V
Remote command:
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:PRESet on page 1052
Save/Recall
Accesses the "Save/Recall" dialog, that is the standard instrument function for storing
and recalling the complete dialog-related settings in a file. The provided navigation
possibilities in the dialog are self-explanatory.
The filename and the directory, in which the settings are stored, are user-definable; the
file extension is however predefined.
See also Chapter 10, "File and Data Management", on page 619.
Remote command:
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:SETTing:CATalog? on page 1052
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:SETTing:STORe on page 1053
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:SETTing:LOAD on page 1053
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:SETTing:DELete on page 1053
RF Envelope
In instruments equipped with option R&S SMW-K540, enables the output of a control
signal that follows the RF envelope. This control signal is provided for power amplifiers
envelope tracking testing. The signal is output at the I/I BAR connectors.
The envelope tracking (ET) is a method used by the modern power amplifiers (PA) to
improve their efficiency, especially when amplifying high crest factor RF signals. With
envelope tracking, the PA estimates, i.e. "tracks", the RF signal and varies the supply
voltage at the end amplifying stage synchronous to the changes in the RF signal.
See user manual R&S
®
SMW-K540, R&S
®
SMW-K541 Envelope Tracking and AM/AM,
AM/PM Predistortion.
Remote command:
[:SOURce<hw>]:IQ:OUTPut[:ANALog]:ENVelope:STATe
I/Q Output Type
Selects the type of output signal.
If R&S SMW-B9 is installed, the differential signal output can be activated in "I/Q Ana-
log A" block only. Single-ended and differential signals cannot be output at the same
time.
The provided parameters in the "I/Q Analog Outputs" dialog depend on the selected
output mode.
I/Q Analog Output Settings
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